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Estimating the Optimum Tilt Angles for South-Facing Surfaces in Palestine

Author

Listed:
  • Ramez Abdallah

    (Mechanical Engineering Department, Faculty of Engineering & Information Technology, An-Najah National University, P.O. Box 7, 00970 Nablus, Palestine)

  • Adel Juaidi

    (Mechanical Engineering Department, Faculty of Engineering & Information Technology, An-Najah National University, P.O. Box 7, 00970 Nablus, Palestine)

  • Salameh Abdel-Fattah

    (Mechanical Engineering Department, Faculty of Engineering & Information Technology, An-Najah National University, P.O. Box 7, 00970 Nablus, Palestine)

  • Francisco Manzano-Agugliaro

    (Department of Engineering, CEIA3, University of Almeria, 04120 Almeria, Spain)

Abstract

The optimum tilt angle of solar panels or collectors is crucial when determining parameters that affect the performance of those panels. A mathematical model is used for determining the optimum tilt angle and for calculating the solar radiation on a south-facing surface on a daily, monthly, seasonal, semi-annual, and annual basis. Photovoltaic Geographical Information System (PVGIS) and Photovoltaic Software (PVWatts) is developed by the NREL (US National Renewable Energy Laboratory) are also used to calculate the optimum monthly, seasonal, semi-annual, and annual tilt angles and to compare these results with the results obtained from the mathematical model. The results are very similar. PVGIS and PVWatts are used to estimate the solar radiation on south-facing surfaces with different tilt angles. A case study of a mono-crystalline module with 5 kWP of peak power is used to find out the amount of increased energy (gains) obtained by adjusting the Photovoltaic (PV) tilt angles based on yearly, semi-annual, seasonal, and monthly tilt angles. The results show that monthly adjustments of the solar panels in the main Palestinian cities can generate about 17% more solar energy than the case of solar panels fixed on a horizontal surface. Seasonal and semi-annual adjustments can generate about 15% more energy (i.e., it is worth changing the solar panels 12 times a year (monthly) or at least 2 times a year (semi-annually). The yearly optimum tilt angle for most Palestinian cities is about 29°, which yields an increase of about 10% energy gain compared to a solar panel fixed on a horizontal surface.

Suggested Citation

  • Ramez Abdallah & Adel Juaidi & Salameh Abdel-Fattah & Francisco Manzano-Agugliaro, 2020. "Estimating the Optimum Tilt Angles for South-Facing Surfaces in Palestine," Energies, MDPI, vol. 13(3), pages 1-29, February.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:3:p:623-:d:315362
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    References listed on IDEAS

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    1. Omar, Moien A. & Mahmoud, Marwan M., 2018. "Grid connected PV- home systems in Palestine: A review on technical performance, effects and economic feasibility," Renewable and Sustainable Energy Reviews, Elsevier, vol. 82(P3), pages 2490-2497.
    2. Hartley, L.E. & Martínez-Lozano, J.A. & Utrillas, M.P. & Tena, F. & Pedrós, R., 1999. "The optimisation of the angle of inclination of a solar collector to maximise the incident solar radiation," Renewable Energy, Elsevier, vol. 17(3), pages 291-309.
    3. Mirian Jiménez-Torres & Catalina Rus-Casas & Lenin Guillermo Lemus-Zúiga & Leocadio Hontoria, 2017. "The Importance of Accurate Solar Data for Designing Solar Photovoltaic Systems—Case Studies in Spain," Sustainability, MDPI, vol. 9(2), pages 1-14, February.
    4. Hartner, Michael & Ortner, André & Hiesl, Albert & Haas, Reinhard, 2015. "East to west – The optimal tilt angle and orientation of photovoltaic panels from an electricity system perspective," Applied Energy, Elsevier, vol. 160(C), pages 94-107.
    5. Ibrik, Imad H. & Mahmoud, Marwan M., 2005. "Energy efficiency improvement procedures and audit results of electrical, thermal and solar applications in Palestine," Energy Policy, Elsevier, vol. 33(5), pages 651-658, March.
    6. Juaidi, Adel & Montoya, Francisco G. & Ibrik, Imad H. & Manzano-Agugliaro, Francisco, 2016. "An overview of renewable energy potential in Palestine," Renewable and Sustainable Energy Reviews, Elsevier, vol. 65(C), pages 943-960.
    7. Tang, Runsheng & Wu, Tong, 2004. "Optimal tilt-angles for solar collectors used in China," Applied Energy, Elsevier, vol. 79(3), pages 239-248, November.
    8. Yakup, Mohd Azmi bin Hj Mohd & Malik, A.Q, 2001. "Optimum tilt angle and orientation for solar collector in Brunei Darussalam," Renewable Energy, Elsevier, vol. 24(2), pages 223-234.
    9. Seyed Abbas Mousavi Maleki & H. Hizam & Chandima Gomes, 2017. "Estimation of Hourly, Daily and Monthly Global Solar Radiation on Inclined Surfaces: Models Re-Visited," Energies, MDPI, vol. 10(1), pages 1-28, January.
    10. Morcos, V.H., 1994. "Optimum tilt angle and orientation for solar collectors in Assiut, Egypt," Renewable Energy, Elsevier, vol. 4(3), pages 291-298.
    11. Nijegorodov, N. & Devan, K.R.S. & Jain, P.K. & Carlsson, S., 1994. "Atmospheric transmittance models and an analytical method to predict the optimum slope of an absorber plate, variously oriented at any latitude," Renewable Energy, Elsevier, vol. 4(5), pages 529-543.
    12. Mousazadeh, Hossein & Keyhani, Alireza & Javadi, Arzhang & Mobli, Hossein & Abrinia, Karen & Sharifi, Ahmad, 2009. "A review of principle and sun-tracking methods for maximizing solar systems output," Renewable and Sustainable Energy Reviews, Elsevier, vol. 13(8), pages 1800-1818, October.
    13. Jafarkazemi, Farzad & Saadabadi, S. Ali, 2013. "Optimum tilt angle and orientation of solar surfaces in Abu Dhabi, UAE," Renewable Energy, Elsevier, vol. 56(C), pages 44-49.
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    2. Gönül, Ömer & Yazar, Fatih & Duman, A. Can & Güler, Önder, 2022. "A comparative techno-economic assessment of manually adjustable tilt mechanisms and automatic solar trackers for behind-the-meter PV applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 168(C).
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    4. Salameh, Tareq & Tawalbeh, Muhammad & Juaidi, Adel & Abdallah, Ramez & Hamid, Abdul-Kadir, 2021. "A novel three-dimensional numerical model for PV/T water system in hot climate region," Renewable Energy, Elsevier, vol. 164(C), pages 1320-1333.
    5. Ramez Abdallah & Emad Natsheh & Adel Juaidi & Sufyan Samara & Francisco Manzano-Agugliaro, 2020. "A Multi-Level World Comprehensive Neural Network Model for Maximum Annual Solar Irradiation on a Flat Surface," Energies, MDPI, vol. 13(23), pages 1-31, December.
    6. Tong Liu & Li Liu & Yufang He & Mengfei Sun & Jian Liu & Guochang Xu, 2021. "A Theoretical Optimum Tilt Angle Model for Solar Collectors from Keplerian Orbit," Energies, MDPI, vol. 14(15), pages 1-17, July.
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